3 Tonight -- Only on Four -- A family's heartbreaking loss Leads to a life-saving decision. A choice that may have saved the life of that 10 year old girl in Philadelphia So desperate for new lungs. Tonight-- You're going to hear how that Pittsburgh family's ONE choice Has saved FIVE lives -- miles away. KELLY BRENNAN SITS DOWN WITH THE PARENTS WHOSE BEAUTIFUL DAUGHTER -- NOW LIVES ON. 3 3 3 NO PARENT SHOULD 3 BURY THEIR CHILD.AND IN A TRAGIC SITUATION LIKE THE ONE THAT HAPPENED TO ONE LOCAL FAMILY, LOVED ONES SEARCH FOR ANSWERS TO KNOW THEIR CHILD DID NOT DIE IN VAIN.THIS FAMILY...GOT THAT ANSWER. 3 THERE ARE MOMENTS IN LIFEWE FEEL IT JUST CAN'T BE REAL.BUT THEN THERE ARE MOMENTSWE KNOW WE CAN MAKE A DIFFERENCE. 19-YEAR-OLD CAT 3 HEALY WAS KILLED EARLY SUNDAY MORNING IN A CAR ACCIDENT IN FAYETTE COUNTY.STATE POLICE BELIEVE THE DRIVER OF THE CAR WAS INTOXICATED, BUT THEY'RE STILL TOXICOLOGY AND IT'S THROUGH THAT GIFT 3 THE WEAKARE MADE STRONG.THE FAMILY EVEN HAS 3 REASON TO BELIEVE ONE OF THOSE RECIPIENTS IS 10-YEAR-OLD SARAH MURNAGHAN WHOSE LEGAL BATTLE FOR AN ADULT LUNG TRANSPLANT CHANGED THE FEDERAL LAW.BUT THERE IS A CHANCE THIS FATHER MAY NEVER KNOW EXACTLY WHO RECEIVED CAT'S ORGANS.TO HIM...THAT DOESN'T MATTER.IT'S ENOUGH JUST KNOWING CAT LIVES ON. 3 3